Electronic apparatus and fuel cell control method for electronic apparatus

a technology of electronic equipment and fuel cell, which is applied in the field of electronic equipment, can solve the problems of affecting the proper function of the apparatus, pixel defects, and difficulty in using a large hydrogen tank or heavy hydrogen absorbed alloy,

Inactive Publication Date: 2007-02-08
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0027] According to the present invention, consonant with the electronic apparatus that employs the fuel cell device as a power source, the temperatures at the several portions of the electronic apparatus, other than at the fuel cell device, and the operation of the fuel

Problems solved by technology

For a mobile electronic apparatus for which a reduction in the size and the weight of a fuel cell is requested, the use of a large hydrogen tank or a heavy hydrogen absorbed alloy is difficult.
Thus, the additional source of heat may adversely affect proper function of the apparatus.
For example, in a case where for an image pickup apparatus that includes a CCD as an image pickup device, the temperature exceeds a specific level, a pixel defect may occur because of the characteristics of the CCD.
Such a defect is called a white scratch because it appears that white light is being emitted, and for a screen display, this is a quality defect.
Further, most individual operating devices include LSIs or other electronic components which have heat endurance limitations, and when the temperature in the apparatus with such components

Method used

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  • Electronic apparatus and fuel cell control method for electronic apparatus
  • Electronic apparatus and fuel cell control method for electronic apparatus
  • Electronic apparatus and fuel cell control method for electronic apparatus

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Embodiment Construction

[0036] An electronic apparatus according to an embodiment of the present invention will now be described while referring to the accompanying drawings.

[0037] While referring to the drawings, a video camera will now be described as an example embodiment of the present invention. FIGS. 1A and 1B are outline diagrams showing a video camera 101 according to the embodiment of the invention. FIG. 1A is a front perspective view, and FIG. 1B is a rear perspective view. FIG. 2 is a perspective view of the internal structure of the video camera 101. And FIG. 3 is a block diagram showing the system configuration of the video camera 101.

[0038] In FIGS. 1A and 1B, an optical lens system 102 and an LCD monitor 103 are shown that are coupled so as to be open and closed, with the main body of the video camera 101. The LCD motor 103 is used to display moving pictures and still pictures output by a signal processing circuit 302 (see FIG. 3), or moving pictures and still pictures reproduced by a reco...

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PUM

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Abstract

An electronic apparatus is provided which includes a fuel cell device configured to supply electrical power to the electronic apparatus; a temperature sensor configured to measure, other than at the fuel cell device, temperature within the electronic apparatus; a power storage unit configured to store electrical power generated by the fuel cell device; a remaining power detector configured to measure remaining electrical power in the power storage unit; and a controller configured to control operation of the fuel cell device based on output from the temperature sensor and remaining power detector.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to an electronic apparatus, such as a video camera or a digital camera, that employs a fuel cell device as a power source, and a fuel cell control method for an electronic apparatus. [0003] 2. Description of the Related Art [0004] For electronic apparatuses such as video cameras, rechargeable secondary batteries are generally employed as power sources. These secondary batteries are, for example, lithium ion secondary batteries, nickel-metal hydride batteries, nickel-cadmium batteries and lead-acid storage batteries. In many cases, for an electronic apparatus that includes a secondary battery, when the power provided by a battery is reduced during a battery-operated period, a low power display is provided via a display unit, and when the available battery power is equal to or lower than a specific level, the power is disconnected automatically. [0005] On the other hand, fuel cells have b...

Claims

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Application Information

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IPC IPC(8): H01M8/04
CPCG03B17/02Y02E60/50H01M8/04014H01M8/04186H01M8/04208H01M8/04365H01M8/04373H01M8/04388H01M8/04626H01M8/04753H01M8/0618H01M10/0525H01M10/48H04N5/2251H04N5/23241H04N5/23293G03B17/18Y02E60/10H04N23/531H04N23/65H04N23/634
Inventor HOSOE, HIROSHI
Owner CANON KK
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